Alert archive / New York / Areal Flood Advisories in 2012

Areal Flood Advisory 21, NWS Binghamton, NY

July 31, 2012Steuben County, New York

NWS Binghamton, NY issued this areal flood advisory at Jul 31, 2012, 2:46 PM EDT for Steuben County, New York. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Jul 31, 2012, 2:46 PM EDT (18:46 UTC)
Expired
Jul 31, 2012, 8:45 PM EDT
In force
6 hr
Issued by
NWS Binghamton, NY
Area
Storm-based polygon

County Steuben County, NY

The radar

The Binghamton radar (KBGM), 115 km from the middle of the area, began a volume at 18:46 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 6.8 hours before the alert went out and 295 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Albany, NY at 12:00Z on 2012-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 43 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 2012-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
43 J/kg
Mixed-layer CIN
-115 J/kg
Mixed-layer LCL
710 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
69 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Binghamton, NY wrote its last area forecast discussion before this areal flood advisory went out at Jul 31, 2:28 PM EDT, 18 minutes earlier.

Area forecast discussion, Jul 31, 2:28 PM EDT, 18 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BINGHAMTON NY
228 PM EDT TUE JUL 31 2012

.SYNOPSIS...
A UPPER LEVEL DISTURBANCE WILL KEEP ISOLATED TO SCATTERED SHOWERS
AND THUNDERSTORMS DEVELOPING THROUGH THE EVENING HOURS. THEN A
COLD FRONT WILL VERY SLOWLY PROGRESS THROUGH THE ARE TOMORROW AND
THURSDAY. THIS WILL KEEP A CHANCE FOR SHOWERS AND THUNDERSTORMS IN
THE FORECAST THROUGH EARLY THURSDAY.

&&

.NEAR TERM /THROUGH TONIGHT/...
RADAR SHOWING ISOLATED SHOWERS AND THUNDERSTORMS IN THE CWA THIS
AFTERNOON. THESE ARE EXPECTED TO INCREASE TO SCATTERED COVERAGE
THIS AFTERNOON AS AN UPPER LEVEL SHORT WAVE APPROACHES THE AREA
AND DAYTIME HEATING MAXIMIZES WITH THE LOSS OF THE MARINE LAYER. THERE
IS THE CHANCE FOR SOME HAIL TO FORM IN SOME OF THESE STORMS. HOWEVER,
THEY WILL BE PULSE TYPE STORMS, SO ANY HAIL WILL BE SHORT LIVED.
MODELS ARE INDICATING A REDUCTION IN ACTIVITY OVERNIGHT TONIGHT.
ALTHOUGH, WILL KEEP A CHC OF SHOWERS AND STORMS OVER MOST OF THE
AREA, ESPECIALLY CLOSER TO THE FRONT. ANOTHER CONCERN WILL BE ANY
STORMS WITH HEAVY RAIN, ESPECIALLY OVER STEUBEN COUNTY, WHERE WELL
OVER AN INCH OF RAIN HAS ALREADY FALLEN TODAY. WILL HAVE TO
MONITOR FOR THE POTENTIAL FOR SMALL STREAMS AND CREEKS QUICKLY
RISING.

&&

.SHORT TERM /WEDNESDAY THROUGH FRIDAY/...
THE FRONT WILL APPROACH VERY SLOWLY FROM THE WEST TOMORROW
MORNING. AS IT DOES, IT WILL BE A FOCUSING MECHANISM FOR
CONVECTION THROUGH THE DAY. MODELS SHOW THE FRONT WASHING OUT,
POSSIBLY LEAVING MORE OF A WIND SHIFT BOUNDARY LAYING ACROSS THE
CWA THROUGH THE DAY. ALONG WITH HEATING, ANOTHER ROUND OF
SCATTERED SHOWERS AND STORMS WILL DEVELOP. WITH THE TROUGH
EXTENDING WILL INTO THE MID AND UPPER LEVELS OF THE ATMOSPHERE,
THERE WILL NOT BE MUCH OF A STEERING FLOW. PWATS WILL BE BETWEEN
AN INCH AND AN INCH AND A HALF TOMORROW. THIS COULD ALLOW SOME
ADDITIONAL HEAVY RAINERS, AND THE POTENTIAL FOR SOME MINOR FLASH
FLOODING, ESPECIALLY IN LOCATIONS WITH STEEP SLOPES.

BY THURSDAY MORNING, A LOW WILL DEVELOP NEAR CAPE HATTERAS AND
MOVE OFF THE COAST. THIS WILL DRAG THE BOUNDARY EASTWARD, ALONG
WITH THE PRECIPITATION. HIGH PRESSURE WILL SLOWLY BUILD OVER THE
AREA THURSDAY AND FRIDAY, ALLOWING FOR RAIN SHOWERS TO DIMINISH
THURSDAY AND A QUIET DAY ON FRIDAY.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
SOME WEAK RIDGING THURSDAY NIGHT WILL GIVE WAY TO AN APPROACHING
SHORTWAVE. THIS WILL ALLOW FOR LOW CHC POPS AGAIN FRIDAY
AFTERNOON. THEN, A SFC TROUGH WILL MOVE INTO THE AREA AND STALL.
THIS WILL KEEP A CHC OF SHOWERS AND THUNDERSTORMS IN THE FORECAST
FROM SATURDAY THROUGH SUNDAY NIGHT. THE THREAT WILL BE ENHANCED IN
THE AFTERNOON WITH DAYTIME HEATING.

&&

.AVIATION /18Z TUESDAY THROUGH SUNDAY/...
18Z UPDATE... ISOLD-SCTD TSRA WILL DOT CNY THROUGH EARLY EVE...SO
WE'VE INCLUDED BRIEF PDS OF MVFR RESTRICTIONS TO ACCOUNT FOR
THIS. KAVP SHOULD REMAIN VFR...WITH MUCH OF THE CONVECTIVE
ACTIVITY STAYING TO THE W.

LATE TNT/EARLY WED...MARINE LYR LOW CLDNS IS EXPECTED TO FORM
AGN...ALTHOUGH LIKELY A BIT FARTHER E AND LESS EXTENSIVE THAN WE
SAW EARLIER THIS MRNG. ATTM...WE'VE INCLUDED MVFR CIG RESTRICTIONS
AT KAVP AND KBGM ONLY. TOUGH CALL ON PSBL FOG DEVELOPMENT AT KELM.
IN-HOUSE CHECKLIST LEANS TWDS AT LEAST A BRIEF PD OF IFR TWDS
DAYBREAK...SO WE'VE INCLUDED THIS IN THE FCST AS WELL.

MAINLY VFR IS ANTICIPATED LATER WED MRNG INTO THE EARLY AFTN.
ISOLD-SCTD TSRA COULD WELL FORM AGN BY EARLY AFTN...BUT UNCERTAIN
COVERAGE AND THE FACT THAT IT'S NEARLY 24 HRS OUT...PRECLUDE ANY
MENTION OF SUCH IN THE TERMINALS ATTM.

OUTLOOK...

THU THROUGH SUN...MVFR RESTRICTIONS PSBL...IN DIURNALLY DRIVEN
SHRA/TSRA ACTIVITY.

&&

.BGM WATCHES/WARNINGS/ADVISORIES...
PA...NONE.
NY...NONE.

&&

SYNOPSIS...SLI
NEAR TERM...SLI
SHORT TERM...SLI
LONG TERM...SLI
AVIATION...MLJ/MSE
Hazardous weather outlook, Jul 31, 2:33 PM EDT, 13 minutes before
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In the hours before

Special weather statement, Jul 31, 2:20 PM EDT, 26 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BINGHAMTON NY
220 PM EDT TUE JUL 31 2012

NYZ022-311900-
STEUBEN NY-
220 PM EDT TUE JUL 31 2012

...STRONG THUNDERSTORMS WILL AFFECT WESTERN STEUBEN COUNTY...

* AT 217 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A CLUSTER OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING SMALL
  HAIL...AND VERY HEAVY RAIN.  THESE STORMS WERE LOCATED SOUTHWEST
  OF GREENWOOD AND SOUTH OF HORNELL...AND MOVING NORTHEAST AT 20 MPH.

* THE STRONG THUNDERSTORM WILL BE NEAR...
  WEST GREENWOOD AND GREENWOOD AT 230 PM EDT...
  HARTSVILLE AT 245 PM EDT...
  CANISTEO AT 255 PM EDT...
  BUENA VISTA AND HORNELL AT 300 PM EDT...

THESE STORMS HAVE THE POTENTIAL TO BECOME SEVERE AND PRODUCE LARGE HAIL
AND/OR DAMAGING WINDS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE
INDOORS IMMEDIATELY!

LAT...LON 4208 7775 4217 7775 4218 7775 4229 7774
      4246 7760 4231 7733 4199 7771 4199 7775
      4208 7776

MLJ

The office that day

Everything else NWS Binghamton, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 31, 2:20 PM EDTSpecial Weather StatementBGMSteuben40 min
Jul 31, 2:29 PM EDTSevere Thunderstorm WarningBGMSteuben46 min
Jul 31, 3:48 PM EDTSpecial Weather StatementBGMSchuyler42 min
Jul 31, 3:58 PM EDTSpecial Weather StatementBGMYates47 min
Jul 31, 4:30 PM EDTSpecial Weather StatementBGMChemung45 min
Jul 31, 4:54 PM EDTSpecial Weather StatementBGMSeneca66 min
Jul 31, 6:14 PM EDTSpecial Weather StatementBGMSteuben, Yates61 min
Jul 31, 6:31 PM EDTSpecial Weather StatementBGMCortland44 min
Jul 31, 7:26 PM EDTSpecial Weather StatementBGMOneida64 min

Nearby

Areal Flood Advisories in New York, 2012Every areal flood advisory in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.